Sieben, Inge. “Tromp, Paul. 2024. ‘In the Shadow of Secularization Theory: Neglected Issues in the Social-Scientific Study of Spirituality.’ : Proefschrift Katholieke Universiteit Leuven, Pp. 166”. Religie & Samenleving, vol. 19, Oct. 2024, https://doi.org/10.54195/RS.19513.